期刊论文

中文

中国烟草科学

1007-5119

2012

33

3

13-16

10.3969/j.issn.1007-5119.2012.03.003

国家自然科学基金项目（30971723）；

本校为第一机构

为探明湖南烟稻轮作区土壤养分的空间分布,以便对土壤养分进行分区管理。采用GPS技术,在湖南省典型稻烟轮作区采集土样3255份,利用经典统计学和地统计学方法研究了烟稻轮作区土壤养分的总体特征和空间分布特征。结果表明,湖南省烟稻轮作区土壤养分表现为各向异性分布,具有中等程度的空间自相关性,其空间变异受结构性因素和随机性因素的共同影响;土壤养分的空间分布图显示,全氮含量丰富,有机质含量总体上处于中等水平,有机质缺乏(10~20 g/kg)的面积仅为7.43%,有效磷和速效钾区域差异较大,有效磷缺乏(

The objective of this study was to explore the spatial distribution of soil nutrients, and to provide a solid foundation for management of nutrients. 3255 of tobacco and paddy soil samples were collected by using GPS teq：hnology in Hunan province. Descriptive analysis characteristics and spatial variation characteristics were studied. The results indicated that anisotropic structure of nutrient contents of tobacco and paddy soil varied evidently, soil organic content, total N, available P and available K were of moderate spatial autocorrelatio...